Merges external Tailscale funnel detection (FN-2976) — adds types, detection logic, status inclusion, kill flow, and a dedicated UI panel for funnel processes started outside Fusion — alongside custom AI providers API routes and a new settings UI section (FN-2965).
Fusion-Task-Id: FN-2976
- Add regression tests across CLI, core, dashboard, and engine for remote access auth, settings parity, and serve/TUI callback wiring
- Expand dashboard route and modal coverage for remote settings/auth flows including node environment behaviors
- Redact provider-switch failure details in tunnel process manager to avoid leaking sensitive provider diagnostics
- Update route registration and engine lifecycle tests to lock in remote-access behavior under real execution paths
- Add ProjectEngine restore lifecycle core to perform safe restarts and surface detailed restore state transitions
- Expose restore diagnostics through remote-access status types and settings/memory route context, including legacy API mapping updates
- Add comprehensive regression coverage for restore lifecycle behavior in engine and dashboard headless remote-access tests
- Document the restore lifecycle contract in architecture/settings docs and include a patch changeset for @runfusion/fusion
- Add remote-access contracts, provider adapters, and a tunnel process manager with lifecycle handling
- Wire tunnel manager into ProjectEngine startup/shutdown flow and export new remote-access modules
- Update settings modal UX for remote auth URLs, including wrapping and related UI test coverage
- Document tunnel manager behavior and remote settings sync details in architecture, CLI, and settings docs
